Chute structure for incinerators



qgufly 9 J. T. Ma LAREN CHUTE STRUCTURE FOR INCINERATORS Filed July 11,1944 2 Sheets-:Sheet 1 INVENTOR. d v/1&5 T MCLHEEN July 16, W46. J. T.MaCLAREN EA-Qfi fifl CHUTE STRUCTURE FOR INCINERATORS I Filed July 11,1944 2 Sheets-Sheet 2 5 a f f M NH I N VENTOK JAMES T HICLHEEN XPatented July 16, 1946 s PATENT OFFICE CHUTE STRUCTURE FOR INCINERATORSJames Todd MacLaren, Los Angeles, Calif. Application July 11, 1944,Serial No. 544,353

2 Claims.

My invention relates to incinerators which are used for burning up trashof all sorts of burnable materials, including household garbage, and thechief use of the incinerator in which my invention is employed is forhousehold purposes, being relatively of small sizes of suchincinerators.

The bodies of these small incinerators in general use are made ofconcrete of compositions which will withstand the heat which isdeveloped by the combustion of the contents of the incinerator, whichcontents are burned for disposal.

It is highly desirable and is really necessary that the doors which areopened for admission of material which is to be burned have a closurefit over the entrance opening which will be normally close on all sidesto prevent the escape of flames or gases from the inside outwardalongside of the entrance door or gate.

Further, the trash and the garbage which is introduced into theincinerator, and particularly the garbage, is'discharged usually frombuckets, pans and cans and frequently the doors are so constructed andmounted on the incinerator that the materials while being emptied intothe doorway of the incinerator will spill on around the doorway and willhave to be gathered up for entrance to the incinerator.

An object of the invention is to provide an incinerator entrance doorwhich will act as a hopper when opened for the admission of what is tobe burned in the incinerator.

A further object of the invention is to provide such a hopperconstruction that it will close tightly around the door space consistentwith the normal cost of production of such parts.

A further object of the invention is to provide a door for the purposedescribed and which may be assembled in place on the incinerator withoutthe use of bolts, screws, etc., and when the top of the incinerator ismounted on its base, the door of my incinerator may not be removed asrelates to any essential part of my door.

A further object of the invention is to provide a construction of mydoor formed by flat pieces which can be interlocked together and mountedin the incinerator and after the cover is mounted over the doorway, mydoor may not be removed because it will be interlocked together asrelates to the pieces of the door and also into the doorway.

Reference will be had to the accompanying drawings in which:

Figure 1 is a perspective view of a complete incinerator with my hopperdoor open.

Figure 2 is perspective elevational view with my door in place andclosed before the top cap is mounted on the incinerator base.

Figure 3 is a sectional end View through the door opening showing mydoor in a closed position and wherein dotted lines indicate the openposition of my door.

Figure 4 is a view from the inside of the doorway with my door closedlooking in the direction of arrow 4 of Figure 3.

Figure 5 is a top plan sectional view of my door on line 5-5 of Figure3.

Figure 6 is a sectional detail on an enlarged scale showing the hingestructure of my door.

Figure 7 is a perspective view of the body parts which form the walls ofmy door associated to each other approximately as might appear bylooking at these parts from the inside of the incinerator for anunderstanding of the connections of the parts to themselves.

Figure 8 is a perspective view of the metal bar which is mounted acrossthe top of the doorway of the incinerator.

Figure 9 is a perspective view of a metal bar which forms the thresholdof the door opening and is constructed in form to become a part of thehinge structure for my door.

The body of the incinerator may be made in any suitable manner and ofany suitable material as indicated by B and may be provided with anysuitable ash removing door A.

At the top of the body B there is a door opening, the top of whichopening is spanned by the metal bar 2 which is secured into the body ofthe material out of which the incinerator is made.

This bar 2 may be held in place in any suitable manner. It may be heldin place by the cap C of the incinerator when the cap is applied in thebody B. It may also be held in place by the studs 4 which pass throughholes 3 of the metal bar 2. The bottom of the door opening is covered bythe threshold bar 5 secured to the material of the body of theincinerator by stud bolts 6 which pass through openings 1 in the lowerflange of the threshold bar 5. The upper edge of the threshold bar 5 isprovided with the flange 8 which forms a part of the hinge means of mydoor.

The front or the outside face plate of my door is indicated as 9, seeFigure '7, in which figure you are looking from the inside of the door.This face or front plate 9 is provided with side walls I0 and in Figure7 you are looking at the inside of these side walls Hi, The face plate 9is provided with little slots H on its edges and the side walls [0 areprovided with hook-shaped lugs [2 which are adapted to be entered intothe notches II and 3 then slid downward which then will lock the twoparts together in the position, which they assume when mounted in thedoorway.

The lower end of the plate 9 terminates in the straight edge 13,Projecting outwardly from the inside of the plate 9 above the bottomedge [3 there is a curved flange M which when my door parts areassembled and are placed into position in the incinerator, the straightedge l3 rests on a shoulder 55 of the bar '5, which then acts like ahinge pin connection as and when the straight edge l3 contacts theshoulder l5 and is held in place by the curved flange l4 riding over theflange 8 of the threshold bar 5.

In the assembly of the parts of the incinerator after the walls of thebody B have been assembled in place and before the metal bar 2 ismounted over the doorway in the body B, my front or face plate 9 and theside walls ill are locked'together and then are mounted in the doorwayas a single unit supported on the threshold bar 5, which has alreadybeen mounted-in the doorway.

The side walls H3 are provided with their top .edges it which are curvedto conform to a radius over the straight edge #3 of the face or frontplate 9. On the inside upper corner of the side walls l E! there is anoutward projection l l, which is adapted to be engaged by the inner sideof the lower flange 5 8 of the bar 2% and when the said bar-is mountedin place over the top of the doorway.

This projection ll contacting behind the flange H) of the bar '2 holdsmy door open, thus forming a hopper H when the door is open, see Figure1.

After this assembly is so far made, the top cap member C of theincinerator is then mounted on the incinerator which completes theassembly of an incinerator provided with my door hopper construction. Ahand hold knob I9 is provided for opening and for closing the door.

After my door has been assembled in the incinerator as shown anddescribed herein and the top cap of the incinerator put on in place, mydoor may not be removed from its location in the incinerator and it willoperate successfully in being opened and closed in the absence of anyhinge means of the common hinge character. The door will hold itself inplace as a hopper when opened in the absence of any other means outsideof the projections ll contacting the insideof the flange l8- of the bar2.

When my door is in closed position the inside top corners of the sidewalls lil overhang the front plate 9 and weight by gravity holds thedoor shut at all times when closed. Thereby no springs or latches areneeded for holding my door shut.

The construction and the arrangement of the parts of my door are of lowcost and are highly serviceable and strong and are especially so whereinan incinerator door is subject to constant heating and cooling, as doestake place in this class-of an incinerator.

What I claim is:

1. In an incinerator of the class described having a rectangular dooropening, the top of this opening being spanned by a cross bar, said barhaving an inwardly and downwardly extending flange across the top of thedoor, the said opening spanned by a threshold bar at the bottom thereof,

said bar having a vertical flange across the opening of the door, anoutward extending offset on said upward flange, a door plate coveringthe entire door opening and resting on the said onset of the saidthreshold and the top of the said door plate overlapping the bottom ofthe said flange on the top of the door, an inwardly and downwardlyextending flange on the inside and at the bottom portion of the saiddoor plate overriding the said vertical flange on the said thresholdwhich overriding flange together with the bottom portion of the saiddoor plate rests on the said offset of the said threshold to form thehinge for the door: in combination with side plates attached to the sideportions of the said door plate and approximating a triangular shape andWith their apex ends located at the bottom of the said door plate andextending upwardly therefrom at an approximate angle of fort fivedegrees and the upper inner corner of said plates extending to adistance above the lower edge of the downward flange of the said crossbar in a narrow projection that when the face plate is rocked about itshinged center to an open angle of approximately forty'flve degrees, thesaid projection on the inside corner of the said side plate will contactthe inside of the downward flange of the bar across the top of theopening, the top edges of the triangularly shaped pieces'liaving thoseedges on a radii line around the hinge center at the bottom of the frontplate whereby when the parts are assembled the door plate and its sideplates will be retained in place, the bottom of the door hinging overthe threshold flange and the top of the door retained in place by thecurved top of the side plates contacting the bottom of the flange on thecross bar at the top.

2. In a door of the class described, a front face plate forming thecoverage of a door opening, the bottom edge of the said front face platehaving a straight edge, a projection from one side of the bottom portionof the said front face plate and extending inwardly and downwardly,thereby forming as it were a groove shaped space across the bottom ofthe said front face plate, a threshold bar across the bottom of the dooropening, a vertically extending .flange extending upwardly from the saidthreshold bar and adapted to enter into the said groove on the bottom ofthe said front face plate forming therewith a hinge connection betweenthe said front face plate and the said threshold bar, triangularlyshaped side plates detachably fixed to the interior sides of the saidfront face plate thereby forming a chute for directing materials to theinterior of the incinerator, the said triangular plates having hookedshaped projections on their edges contacting the sides of the said frontface plate, apertures in the sides of the said front face plate intowhich apertures the said hooked shaped projections are locked andthereby held to the said front face plate, upwardly extendingprojections on the top inner corners of the said triangularly shapedside plates whereby said projections contact the inner side of the topcross bar of the door opening.

JAMES TODD MACLAREN.

